Routines in this module calculate Dust mobilization and dry deposition for dust.
Simulates dust mobilization due to wind from the surface into the
lowest atmospheric layer. On output flx_mss_vrt_dst(ndst) is the surface dust
emission (kg/m**2/s) [ + = to atm].
Calculates the turbulent component of dust dry deposition, (the turbulent deposition
velocity through the lowest atmospheric layer). CAM will calculate the settling
velocity through the whole atmospheric column. The two calculations will determine
the dust dry deposition flux to the surface.